Gemini 3.1 Pro

Approved Data Classifications

Description

Gemini 3.1 Pro is the next iteration in the Gemini 3 series and builds on Gemini 3 Pro’s foundation with improved reasoning, behavior, and multimodal capabilities. It supports text, image, video, and audio inputs, retains the up to ~1,048,576-token context window and up to ~65,536 output tokens in preview, and adds finer control over reasoning depth with multiple thinking levels.

Capabilities

Model	Release Date	Input	Output	Context Length	Cost (per 1 million tokens)
gemini-3.1-pro-preview	Feb 19 2026	Text, Image, Video, Audio, PDF	Text	1,048,576	$2.00/1M input (<=200k) $4.00/1M input (>200k) $12.00/1M output (<=200k) $18.00/1M output (>200k)

info

• 1M represents 1 Million Tokens
• All prices listed are based on 1 Million Tokens

Availability

Cloud Provider

Usage

curl

curl -X POST https://api.ai.it.ufl.edu/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer <API_TOKEN>" \
-d '{
    "model": "gemini-3.1-pro-preview",
    "messages": [
        {
            "role": "system",
            "content": "You are a helpful assistant."
        },
        {
            "role": "user",
            "content": "Write a haiku about an Alligator."
        }
    ]
}'

python

from openai import OpenAI
  client = OpenAI(
      api_key="your_api_key",
      base_url="https://api.ai.it.ufl.edu/v1"
  )

  response = client.chat.completions.create(
      model="gemini-3.1-pro-preview", # model to send to the proxy
      messages = [
          { role: "system", content: "You are a helpful assistant." },
          {
              "role": "user",
              "content": "Write a haiku about an Alligator."
          }
      ]
  )

  print(response.choices[0].message)

javascript

import OpenAI from 'openai';

const openai = new OpenAI({
  apiKey: 'your_api_key',
  baseURL: 'https://api.ai.it.ufl.edu/v1'
});

const completion = await openai.chat.completions.create({
    model: "gemini-3.1-pro-preview",
    messages: [
        { role: "system", content: "You are a helpful assistant." },
        {
            role: "user",
            content: "Write a haiku about an Alligator.",
        },
    ],
});

print(completion.choices[0].message)

When to Use

• Complex, high-stakes reasoning and planning
• Advanced coding and system design
• Deep multimodal analysis
• Long-context research and synthesis
• Agentic workflows that need maximum accuracy

---

References

1. Gemini 3.1 Developer Guide
   https://ai.google.dev/gemini-api/docs/gemini-3
2. Gemini Models (Gemini API)
   https://ai.google.dev/gemini-api/docs/models
3. Gemini API Pricing
   https://ai.google.dev/gemini-api/docs/pricing